J. Kerkhoff
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Rheinhausen-ch 5th | ??/??/2001 | 300 | Germany |
| Rheinhausen-ch 4th | ??/??/2000 | 289 | Germany |
Most Played Openings as White
| ECO | Opening | Games |
| B23 | Sicilian, closed | 3 games |
| C24 | Bishop's opening, Berlin defence | 3 games |
| C02 | French, advance variation | 1 games |
| B07 | Pirc defence | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| A84 | Dutch defence | 1 games |
| C54 | Giuoco Piano | 1 games |
| B08 | Pirc, classical (two knights) system | 1 games |
| B12 | Caro-Kann defence | 1 games |


Germany